Suggest Medication For Mild Regurgitation Without Affecting Pregnancy Chances

i am 37 years old and i am planning for a second child, recently i have been diagnosed for mild regurtitation and taking Isoptin 40 mg once a day. two days ago i decided to stop taking isoptin 40 because of headache and i also consulted my ob gyne for taking isoptin, she told me to ask my cardiologist for another treatment that would not hinder me for getting pregnant again. Can you please help me for now, i havent seen yet my cardio. Thank you very much